CES eth content sensor installed, flex fuel patch coming soon

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May 9, 2011, 12:05 PM

#76

evo8dad

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mrfred - curious to see if you are still looking into implementing this. I am going back to racing the Evo (from shifter karts) and could really use this mod in the current patches.

If you need any testing let me know.

Thanks!

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May 10, 2011, 01:53 AM

#77

mrfred

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Quote:

Originally Posted by evo8dad

I've been pretty busy with day job stuff and tuning a few Evos. All my tuning committments are now out of the way, so I do plan to get back to this and finish it up.

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May 10, 2011, 05:38 AM

#78

binky

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Quote:

Originally Posted by mrfred

I've been pretty busy with day job stuff and tuning a few Evos. All my tuning committments are now out of the way, so I do plan to get back to this and finish it up.

Awesome

-Bink

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May 18, 2011, 01:29 PM

#79

Fast_Freddie

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Looking forward to this for a long time...

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May 18, 2011, 01:33 PM

#80

evo8dad

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Quote:

Originally Posted by mrfred

I've been pretty busy with day job stuff and tuning a few Evos. All my tuning committments are now out of the way, so I do plan to get back to this and finish it up.

Cool! If you need any help at all please don't hesitate.

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May 18, 2011, 03:31 PM

#81

mrboost05

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my aem is for sale if you get this working lol mrfred is the man

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Aug 17, 2011, 07:42 AM

#82

binky

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Any updates on this patch?

-Bink

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Aug 17, 2011, 10:41 AM

#83

mrfred

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Quote:

Originally Posted by binky

Any updates on this patch?

-Bink

Still on my list, but no time recently.

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Aug 17, 2011, 10:41 AM

#84

binky

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Quote:

Originally Posted by mrfred

Still on my list, but no time recently.

No worries, just curious!
Thanks

One other question- where did you buy your GM flex fuel sensor from and how much was it? Are they really 350-400$?

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Aug 17, 2011, 11:30 AM

#85

mrfred

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I got mine off ebay. I think I paid around $300. Last I heard, Zeitronix has a good deal on the sensors, maybe a bit less than $300.

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Aug 17, 2011, 11:32 AM

#86

binky

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Quote:

Originally Posted by mrfred

I got mine off ebay. I think I paid around $300. Last I heard, Zeitronix has a good deal on the sensors, maybe a bit less than $300.

Good deal. Thanks mrfred

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Oct 16, 2011, 07:29 PM

#87

tephra

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ok... my local(ish) servo just got FlexFuel...

yay!

so I will be converting my car (once the build is done).

However the flexible nature of flex has me wanting to develop a Flex patch for the Evo10.

What's the easiest/cheapest way to get a Ethanol Control signal to the ECU? I don't need the fancy gauge..

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Oct 17, 2011, 06:05 AM

#88

mrfred

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The ethanol content sensor outputs a PWM signal, so if you've figured out how to read a frequency-based signal and you know of a spare frequency input, then that's the cheap solution using a sensor. Many newer flex fuel vehicles are relying on the fuel trims to interpolate, so that's another method.

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Oct 17, 2011, 06:14 AM

#89

tephra

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well I can probably dig up a spare pulse input on the ECU, but worst case I will get a FTV circuit made up..

since I have 9 altmaps I was just going to assign say 8 to a tune for E50 and 9 to tune for E98 and then manually interpolate..

I don't think boost will change much, so in the immediate it will just be fuel maps and timing that will change...

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